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This small package provides the standard R distribution functions for the Truncated Generalised Gamma Distribution (see Murray, Robotham, Power (2016) [MRP]).
Included are the density, CDF, quantile function and random generator, both for the real-space TGGD and log-space TGGD.
The simplest way to install the package is to use
devtools.
First, install the only dependency, gsl:
install.packages("gsl").
Next, install devtools:
install.packages("devtools") (note there are further
dependencies of this package).
Finally, install this package:
install_github('asgr/tggd').
Usage details are found by accessing the help files in the package,
but are identical to the standard R distribution functions (eg.
rnorm or `dpoiss``). Examples are also found in these
files.
To understand why and when to use these functions, please refer to MRP.
We note in particular that the log-space forms of the functions are defined as the distributions of the log of the variates from the real-space distribution with identical parameters. This is the correct form to use if performing Bayesian analyses in which the values of the variates are uncertain with priors defined in log-space (eg. lognormal distributions).
0.1
These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.